Head-motion for concentrating-tables.



W. P. DEISTBR.

HEAUMOTION POE CONUENTRATING TABLES.

APPLICATION FILED JUNE 20,1913.

PateutedMar. 3, 1914,

3 SHEETS-SHEET 1.

INVENTOR 1 km MAM W. DBISTBR. HEAD MOTION FOR GONCBNTRATING TABLES.APPLICATION FILED JUNE 20,1913.

1,088,682. Patented Mar. 3, 1914.

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WITNESSES INVENTOR W. F. DEISTBR.

HEAD MOTI ON FOR (JONOEN'IRATING TABLES.

APPLICATION FILED JUNE 20, 1913,

1,088,682. Patented Mar. 3, 1914.

3 SHEETS-45113111 3.

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WITNESS ES INVENTOR WILLIAM F. DEISIER, OF FORT WAYNE, INDIANA,ASSIG-NOR COMPANY, OF FORT WAYNE, INDIANA T DEISTIDR MACHINE ACORPORATION OF INDIANA.

HEAD-MOTION FOR CONCENTRATING-TABLES.

Specification of Letters Patent. Application filed June 20, 1913.

Serial. No. 774.787.

To all whom it nary concern Be it known that I, WiLnL-iu F. .Duis'run,residing; at Fort Wayne, in the county of Allen and State of Indiana, acitizen of the Utility] States, have invented or discovered certain newand useful improvements in Head-Motions for Concentrating-Tab]es, ofwhich imprm'en'ients the following is a speciiication.

The invention described herein relates to certain improvements inmeclmuism for impar ing; a vibratory motion to concentrating tahlesrandhas for its object a construction whereby a double differential movementmay be imparted to the table, and .it is a further object ot'theinvention to provide for a vari ation of the movements of the table inaccordance with the grade of materials operated on.

The invention is hereinafter more fully described and claimed.

in the accompanying drawings forming a part of this specification,Figure l is a top plan view of a head motion for concentrating tablesei'ubodying my improvement;

Fig. 2 is a sectional elevation of the same, the plane of section beingindicated by the line I.l-II Fig. 1; Figs. 3 and t are detail views ofcertain ative movements, andFig. 5 is a sectional view illustrating amodification-of the means for adjustin the relative positions of thelever; and I ig. 6 is a bottom plan view of the construction shown inFig.

In the practice of my invention, the power shaft 1 is provided with aneccentric of crank pin 2 on which is loosely mounted a roller 3. Thisroller operates in the curved seat t formed in the lever 5 adjacent toits .t'ree end. The pivot opposite end of the lever, has either the pootion forming the journal for the lever made eccentric to the journalportions supported by the bearings 7, or vice versa. This constructionaffords a convenient means for shifting the lever longitudinally as byapplying a wrench to the squared projecting end of the pin and turningthe latter lever is shifted relative to its operating crank pin oreccentric and small or relatively large movement of the lever on itspivotal axis can be attained. The purpose of this movement will behereina'fiter described.

The univem-ent of the lever 5 is transmitted to the concentrating tableby a bell crank crank will \ary parts illustrating their relpin 6supporting the lever, but suitable tented Mar. 3. 1914.

means is interposed between the lever 5 and the hell crank leverwhcreliiy the rate of movement of the bell it is drawings, versed. lever5 has attach block 8 preferably cued steel wearing bear against a conformed by a roller the end of one arm 10 of vcr. The other nected to oneend of at dill'ercnt points from the rate of movement of the lever 5.

preferred to transmitting elements as shown Although the motion in thesuch arrangements may be re- In the pre'terred constructions the edthereto an angular providcd'with a hardface, and adapted to vex portionpreferably 9 loosely mounted ho a bell crank learm .11 of the lever iscon- 21 pitman 12 adapted to be connected at its opposite end to aconcentrating table. As is spring is so applied part of its operatingmechanism as to customary intho art, a to the table or some exert aconstant pull in the direction of the arrow ac, and thereby hold theroller 9 in contact with 11. should be adjust the angular block 8. It ispreferred that the connection of the pitman to the arm able so that thelength of stroke imparted to the concentrating table may be varied.

The radius of curvature of the preferably greater than the radius of theroller 3, so that the roller-on the curved forth according to 1:1 Thiswill he clearly ing that the crank seat 4; is

, point of bearing of the seat will shift back and 1e position of thecrank. understood by suppospin in the position shown in Pig. 3, at whichtime the point of hearing-of the roller on a vertical plane pa of theshaft tion stated there is l and crank pin 2. observed that when theparts are in the posithe seatwill be in ssiug through the axes It willbe a relatively large space the curved seat and the periphery of thedisk measured radially of the disk. As the shaft rotates tion of thearrow g the roller being. loose on the crank pin will shifting its pointof toward a. quickest downward bearing of the roller (4. Thisoutward'slnftmg of the in the direc- 4 roll on the curved seat contactthereon from b As the crank approaches are of movement the point of onthe seat will be at point of bearing of the roller on the seat duringthe quickest downward will modify to some manta of the lever.

movement of the crank extent the rate of move- As the crank pm passesCir beyond a line from the center of the shaft through the point a, thepoint oi? contact of the roller on the seat will begin 'to' move to theright and as the crank pin approaches the are where its upward movementis most rapid the point of contact of the roller on the seat will be at0 or nearer the pivotal point the lever and hon-cc the movement oi? thelever upward will be As the crank pin moves from the position shown inFig. 3, the lever 5 is forced down and in its movement the arm 10 of thebell crank lever is also forced down. it will be observed that the pointof bearing of the roller 9 on the block 8 is closely adjacent. to theapex of the block, and hence the downward movement of the arm 10, whilethe apex of the block is moving into a vertical plane coincident withthe axis of the shaft 1 will be slightly more rapid. than that of thelever 5, until the axis of the roller 9 is also coincident with the sameplans. As the apex of the block passes beyond this plane, the movementof the arm 10 Will be gradually reduced at a rate approximatelyproportional to the shifting of the point of contact of the roller 9from the apex of the block.

By shifting the relative longitudinal position of the lever 5 and arm10, which can be efiectedby turning the pivot pin (5, as hereinafterstated, the, range of movement of the point of contact of the roller onboth sides of the apex of the block can be made equal, be made reater onthe side oi than oiftbe sic e c. Tins shifting of the point out contacteffects a very material change in the character of the vibrationsimparted to the concentrating table. Indicator cards taken with leveradjusted to dii'lerent positions clearlv show the difference ofmovements imparted to the table by reason of such adj nstments.

In lice. of shifting the lever 5 longitudinally above described, theangular block 8 may be secured to a slide 13 movably mounted on thelever, and adapted to'be' shitited to different positions therealong asshown in Figs. 5 and (5. In the construc-- tion shown the slide issupported by rod 14: having a tapering portion so that by shifting therod longitudinally the'slide can be drawn tightly to its seat on thelever.

The movement of the slide along the lever can be effected by anysuitable means, as a bolt 15 screwing through a. log on. and having aswivel connection. to the sa. ittempts have been made to ob ferentialmovement by means of lovers ingz one on the other in such manner t thepoint of beaing of one lever on ther will be shifted relative to the"zivotal points of levers during their ope tio'n. this form of headmotion the ie ers have been arranged practically parallel w th theirpoint of contact in a plane passing; through pivotal [is the mo e of:movement of these levers is small .:ollows that the change of locationof ther r point of contact will be'small and the diitierentiai duo tosuch a change willbe smaller and i1nproperiy timed. in the constructi nset forth the levers are arranged at an an each other so that a slightchairs in position of the levers will considerabie change in thepositions of their pointat contact relative to their pivotal points. Andiurther the angular block 8 serves to increase the differential due toand in the same direction as is eliected by the shining of the point ofcontact.

I claim herein as my invention:

1. A head motion for a concentrating table having in con'ibination aplurality of pivoted. members one operative by the other means forimparting a differential movement to one of said members, means fortransmitting motion from the second memher to the part or element to beoperated and means interposed between said the members for imparting anabnormal move ment to the second member.

2. A head motion for a concentrating table having; in. combination aplurality of pivoted members, one operative hf; other, means foroscillating one of said members means for transmitting the move ment ofthe second member to the or element to be operated, and means interposedbetween said members imparts: an abnormal movement to the membcr.

8. A head motion for a concentratin table having in combination a pluralpivoted members, one operative is; other, means for oscillating one atmembers, an angular block slide on bearing portion on the respectivemembers, and means for transmitting the moveme table, having incombination a pi'uraiii pivoted members, one operative by other, meansfor oscillating one of members, an angular block and a bearing portionon the respective members, means for adjusting; the relative'positionsoi the block and curved bearing portions, and means for transmitting themovement of the second member to the "part to be operated.

A head motion for a concentrating table, having in combination aplurality of pivoted members one operative by the other, means foroscillating one of said members, an angular block and a curved Ems-wing;portion on the respective members, UJPEVHF; for shifting one of themembers i0ngizmdinally, and means for transmitting the motion of thesecond member to the part to be operated.

6. A head. motion for a concentrating tabie having in combination aplurality of pivoted members, means for oscillating one 16 of saidmembers, an angular block on said membeign rolier looseiy mounted on thesecond member and forming a bearing for the an ular block, and means fortransmitting the motion of the second member to 20 be part to beoperated.

in testimony whereof, I have hereunto set my hand.

WILLIAM F. DEISTER. Vi'itnesses:

IIELE'NA Ennm'm',

( rmmnvon Lorne ALTER.

